Amid security worries, millions of pilgrims are expected to descend on Rome for a Jubilee Year of major Catholic celebrations throughout 2025. Here are the highlights.

The pope opened the Jubilee Holy Door praying that the Holy Spirit would soften hearts so that "enemies may speak to each other again."

The Pope chose to open the Holy Door at the Rebibbia prison in Italy as his second of five doors during the 2025 Jubilee for this reason.

Pope Francis urged inmates to never give up hope as he inaugurated the Vatican’s Jubilee Year at the high-security Rebibbia prison on the outskirts of Rome on Thursday.

Pilgrims from around the world have been passing through the open Holy Door of St. Peter’s Basilica this week.

Opening the Holy Doors of St. Peter’s Basilica on Christmas Eve, Pope Francis inaugurates a jubilee year expected to draw 32 million visitors to Rome.

Pope Francis made a visit on Thursday to one of the largest prison complexes in Italy, opening a special "Holy Door" for the 2025 Catholic Holy Year, in what the Vatican said was the first such action by a Catholic pontiff.

As the Pope left the Rebibbia prison, he stopped to greet the 300 inmates and staff who had waited outside of the crowded chapel on the cold December morning.

The rite of opening the Holy Doors of the main basilicas of Rome to inaugurate the 2025 Jubilee Year is perhaps one of the most solemn events of the Catholic Church.